Jonathan Preston Allen h/o Sarah Elizabeth Allen, Seminole, OK

Looking for information on the family of Jonathan Preston (John P. Allen) born about May 23, 1875 in Illinois, lived with his parents, Joshua P. and Alice M. Jones Allen, in Fort Bend, Texas in 1900. On 1920 and 1930 Seminole Co., OK census with wife and children. 1930 census list wife Sarah and children Ray, Ruth, Russell, and Buford. Ray born about 1909, Ruth about 1916, Russell 1919, and Buford 1928. Any help with finding burial sites or descendants of these families would be greatly appreciated.